[anuprdk]

Hi,

I am trying to simulate an open channel flow. I am experiencing some issues with respect to the model as it exits automatically and hence I have attached a couple of slide shots pertaining to the definitions of the input data for clarification.

The domain is defined as: 5 x 2 x 0.9 m with origin at the point (0,0,0)

I have chosen a time dependant (Transient) 'Pressure based' solver with gravitational constant in the specific direction.

Primary phase - air
secondary phase - water

Are boundary conditions to be defined only for the mixture and not for individual components? I want the air to remain stationary. How to do that?
The boundary condition for the free surface (top_wall) has also been defined as 'Pressure outlet' as shown in the attachment.

The solution is initialized by computing from 'Inlet' with the 'Open channel initialization method' being 'Flat'. Following this a 'Region' corresponding to water till the free surface is 'Marked' and 'Patched' with Volume fraction as 1. I did not 'Adapt' it though.

Can any one please pour in some advice on the procedure followed. The iteration commences with 'Reversed flow' in so and so faces and finally it quits automatically.

Thanking you,

Anup

p1.jpg

p2.jpg

p3.jpg

p4.jpg

p5.png